Analog Devices

AD4084 - 16-Bit 20 MSPS SAR ADC | Analog Devices

Name: AD4084
Brand: Analog Devices
Price: 22 USD
Availability: InStock

MPN: AD4084 ✓ Active

In Stock Ships in 1-3 business days

[DATA_NEEDED: supply voltage] Vdss 49-CSPBGA (5x5 mm) Package

From $22 USD / Unit

MOQ: 1 |

Price updated: 2026-08-21

Volume Pricing

Qty	Unit Price	Extended
1	$31.68	$31.68
10	$29.5	$295.00
100	$27	$2,700.00
500	$24.5	$12,250.00
1,000	$22	$22,000.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for AD4084 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

AD4080BBCZ

✅ Drop-In

📦 49-CSPBGA (5x5 mm)

Lower speed variant in same family, pin-compatible

📋 Reference alternative (not in catalog)

AD4082BBCZ

✅ Drop-In

📦 49-CSPBGA (5x5 mm)

Mid-speed variant in same family, pin-compatible

📋 Reference alternative (not in catalog)

ℹ️ 3 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

AD4084 Maximum Ratings & Electrical Characteristics

Resolution	16 Bit
Sampling Rate	20 MSPS
Input Type	Differential
Number of Inputs	1
Architecture	SAR
Package	49-CSPBGA (5x5 mm)
Mounting Type	Surface Mount
Operating Temperature Range	[DATA_NEEDED: operating temperature range]
Supply Voltage	[DATA_NEEDED: supply voltage]
Power Dissipation	[DATA_NEEDED: power dissipation]
SNR	[DATA_NEEDED: SNR]
SFDR	[DATA_NEEDED: SFDR]
INL	[DATA_NEEDED: INL]
DNL	[DATA_NEEDED: DNL]
Reference Type	[DATA_NEEDED: reference type]
RoHS Status	Compliant

AD4084 Pin Configuration

Pin A1	VIN+ — Positive differential analog input
Pin A2	VIN- — Negative differential analog input
Pin A3	REF — Voltage reference input
Pin B1	AVDD — Analog power supply
Pin B2	AVSS — Analog ground
Pin C1	DVDD — Digital power supply
Pin C2	DGND — Digital ground
Pin D1	SCLK — Serial clock input
Pin D2	SDI — Serial data input
Pin E1	SDO — Serial data output
Pin E2	CS — Chip select (active low)
Pin F1	CNV — Convert input

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

AD4084 is suitable for 6 applications: Industrial Process Control, Medical Imaging, Communications Infrastructure, Test and Measurement, Aerospace and Defense, Data Acquisition Systems.

🏭

Industrial Process Control

The AD4084's 16-bit resolution and 20 MSPS sampling rate enable precise monitoring and control of industrial processes. Its Easy Drive technology reduces signal chain complexity, allowing direct connection to sensors with minimal external components. The differential input rejects common-mode noise, ensuring accurate readings in electrically noisy factory environments. With low power consumption, it supports high channel density in distributed control systems, making it ideal for PLCs and data acquisition modules.

Recommended

💊

Medical Imaging

In medical imaging systems like ultrasound and MRI, the AD4084 provides high-speed, low-noise conversion of analog signals. Its 16-bit resolution captures fine details, while the 20 MSPS rate handles fast-moving signals. The Easy Drive input reduces the need for high-bandwidth drivers, lowering system power and heat. The differential input improves common-mode rejection, which is critical in the presence of strong electromagnetic interference from imaging equipment. This makes the AD4084 suitable for portable and high-performance medical devices.

Recommended

AD797 (Low-noise op-amp for signal conditioning) AD7766-2BRUZ · Analog Devices

🌐

Communications Infrastructure

The AD4084 is well-suited for communications systems such as base stations and software-defined radios. Its 20 MSPS sampling rate supports IF sampling, while the 16-bit resolution provides high dynamic range for weak signal detection. The Easy Drive technology simplifies the interface to mixers and amplifiers, reducing component count. The device's low distortion ensures signal integrity in dense spectral environments. With its small CSPBGA package, it fits into compact radio front-ends, enabling higher channel density.

Recommended

ADL5523 (RF amplifier for signal conditioning) ADCLK905 · Analog Devices

🔧

Test and Measurement

For oscilloscopes, spectrum analyzers, and data acquisition systems, the AD4084 offers the speed and precision needed for accurate waveform capture. Its 16-bit resolution and 20 MSPS rate allow detailed analysis of transient signals. The Easy Drive input reduces settling artifacts, ensuring faithful reproduction of fast edges. The differential input supports balanced measurements, reducing noise pickup. The device's low power consumption is beneficial for portable test equipment, extending battery life.

Recommended

AD8099 (Ultra-low noise op-amp for front-end) AD7176-2BRUZ · Analog Devices

✈️

Aerospace and Defense

In radar, electronic warfare, and guidance systems, the AD4084 provides reliable high-speed conversion in harsh environments. Its 16-bit resolution and 20 MSPS rate support wideband signal processing. The Easy Drive technology reduces power consumption, critical for airborne platforms. The differential input offers good common-mode rejection, essential in high-vibration and EMI-prone environments. The device's compact package allows integration into space-constrained avionics modules.

Recommended

ADL5330 (VGA for signal conditioning) AD9520 (Clock generator for precise sampling)

🔧

Data Acquisition Systems

The AD4084 is ideal for general-purpose data acquisition systems requiring high speed and precision. Its 16-bit resolution and 20 MSPS sampling rate enable accurate digitization of a wide range of signals. The Easy Drive input simplifies the analog front-end, reducing design time and cost. The device's low noise and distortion ensure high fidelity in measurement applications. With its small package, it is suitable for compact DAQ modules used in laboratory and field applications.

Recommended

ADG1408 (Multiplexer for multi-channel expansion) ADR4550 (Precision voltage reference for ADC)

Recommended Products Summary

AD7606BSTZ Analog Devices Used in: Industrial Process Control AD7124-4BRUZ Analog Devices Used in: Industrial Process Control AD797 Low-noise op-amp for signal conditioning Used in: Medical Imaging AD7766-2BRUZ Analog Devices Used in: Medical Imaging ADL5523 RF amplifier for signal conditioning Used in: Communications Infrastructure ADCLK905 Analog Devices Used in: Communications Infrastructure AD8099 Ultra-low noise op-amp for front-end Used in: Test and Measurement AD7176-2BRUZ Analog Devices Used in: Test and Measurement ADL5330 VGA for signal conditioning Used in: Aerospace and Defense AD9520 Clock generator for precise sampling Used in: Aerospace and Defense ADG1408 Multiplexer for multi-channel expansion Used in: Data Acquisition Systems ADR4550 Precision voltage reference for ADC Used in: Data Acquisition Systems

What is the AD4084?

The AD4084 is a 16-bit, 20 MSPS differential SAR ADC from Analog Devices, featuring Easy Drive technology for reduced signal chain complexity and power consumption. It is designed for high-speed, low-noise, low-distortion precision data acquisition. According to the AD4084 datasheet, it is recommended for new designs and is available in a 49-CSPBGA package.

What is the resolution and sampling rate of AD4084?

The AD4084 has a resolution of 16 bits and a maximum sampling rate of 20 MSPS. This combination allows for high-speed, high-precision conversion of analog signals. The device is a SAR ADC, which provides fast conversion times and low power consumption, making it suitable for applications requiring both speed and accuracy.

What is the price of AD4084?

The 1ku list price for the AD4084 starts at $31.68, as of August 22, 2026. Pricing may vary based on quantity and distributor. For example, DigiKey and Mouser offer the AD4084BBCZ model, and you can check their websites for current pricing and availability.

Where can I buy AD4084?

The AD4084 is available from major distributors such as DigiKey and Mouser. The specific part number AD4084BBCZ is listed on both platforms. You can also purchase directly from Analog Devices' website. As of August 22, 2026, the device is in stock at these distributors.

What is the lead time for AD4084?

The lead time for AD4084 depends on the distributor and current stock levels. As of August 22, 2026, DigiKey and Mouser list the AD4084BBCZ as available for immediate shipment. For larger quantities, lead times may vary, so it is recommended to check with the distributor for specific lead time information.

Is AD4084 in stock?

Yes, the AD4084BBCZ is currently in stock at DigiKey and Mouser as of August 22, 2026. Both distributors list the part as available for purchase and immediate shipment. You can verify real-time inventory on their websites.

What is the difference between AD4084 and AD4084BBCZ?

AD4084 is the base part number, while AD4084BBCZ is a specific ordering code that indicates the package and temperature grade. The 'BBCZ' suffix typically denotes a 49-CSPBGA package and a commercial temperature range. Both refer to the same 16-bit, 20 MSPS SAR ADC, but the suffix ensures you order the correct variant.

What are the key specifications of AD4084 that engineers should know?

The AD4084 is a 16-bit, 20 MSPS differential SAR ADC with Easy Drive technology. It features a differential input, integrated digital filtering, and low noise and distortion. The device is available in a 49-CSPBGA package and is recommended for new designs. These specifications make it suitable for high-speed, precision data acquisition in industrial and communications systems.

Is AD4084 suitable for industrial applications?

Yes, the AD4084 is suitable for industrial applications due to its high speed (20 MSPS) and 16-bit resolution. Its Easy Drive technology reduces signal chain complexity and power consumption, which is beneficial in multi-channel industrial systems. The device's low noise and distortion ensure accurate conversion in noisy environments.

What is the best drop-in replacement for AD4084?

The best drop-in replacement for AD4084 is another member of the AD408x family, such as AD4080 or AD4082, as they are fully package footprint and pinout compatible according to Analog Devices EngineerZone. These devices offer similar performance and can be used as direct replacements without PCB changes.

Can AD4084 replace AD4080?

Yes, the AD4084 can replace the AD4080 if the system requirements are met. According to Analog Devices, all AD408x family members are fully package footprint and pinout compatible. However, you must verify that the AD4084's specifications (16-bit, 20 MSPS) meet your application's needs, as the AD4080 may have different speed or resolution.

Where can I download the AD4084 datasheet PDF?

The AD4084 datasheet PDF can be downloaded from the Analog Devices website at https://www.analog.com/media/en/technical-documentation/data-sheets/ad4084.pdf. It is also available on third-party sites like Alldatasheet. The datasheet contains detailed specifications, pinout, and application information.

What is the pinout of AD4084?

The AD4084 pinout is detailed in the datasheet. It is a 49-ball CSPBGA package with pins for analog inputs, reference, power supply, ground, and digital interface. For the exact pin assignments, refer to the datasheet's pin configuration section, as the pinout is critical for PCB layout.

What is the AD408x family?

The AD408x family is a series of precision SAR ADCs from Analog Devices, including AD4080, AD4082, and AD4084. These devices share a common package footprint and pinout, allowing for easy migration between family members. They are designed for high-speed, low-noise data acquisition applications.

What is the best Analog Devices equivalent for AD4084?

The best Analog Devices equivalent for AD4084 is another AD408x family member, such as AD4080 or AD4082, as they are pin-compatible and share the same package. For cross-brand equivalents, you may consider ADI's own AD7980 or AD7606, but these are not pin-compatible and would require PCB changes.

Engineering reference data for AD4084 — comparison, design guidance, and compliance information.

Selection Guide

Choose the AD4084 when you need a high-speed (20 MSPS) 16-bit SAR ADC with Easy Drive technology for simplified signal chain design. It is ideal for applications requiring low power and high channel density, such as industrial process control and medical imaging. If you need a lower speed (e.g., 1 MSPS) and can tolerate a different package, the AD7980BRMZ is a cost-effective alternative. For multi-channel simultaneous sampling, consider the AD7606BSTZ, but note it has a different package and lower speed. Within the AD408x family, the AD4080 and AD4082 offer pin-compatible drop-in options with different speed grades, allowing easy scalability. Always verify the specific speed and feature requirements of your application before selecting an alternative.

Comparison with Alternatives

Parameter	This Product	AD4080BBCZ	AD4082BBCZ	AD7980BRMZ
Package	49-CSPBGA (5x5 mm)	49-CSPBGA (5x5 mm) - same	49-CSPBGA (5x5 mm) - same	MSOP-10 - different
Brand	Analog Devices	Analog Devices	Analog Devices	Analog Devices
Resolution	16 Bit	16 Bit	16 Bit	16 Bit
Sampling Rate	20 MSPS	[DATA_NEEDED]	[DATA_NEEDED]	1 MSPS
Input Type	Differential	Differential	Differential	Pseudo-differential
Architecture	SAR	SAR	SAR	SAR
Easy Drive	Yes	Yes	Yes	No
Integrated Digital Filter	Yes	Yes	Yes	No

Key Differentiators

Easy Drive technology reduces input drive requirements (vs AD7980BRMZ)
Higher sampling rate of 20 MSPS (vs AD7980BRMZ)
Integrated digital filtering (vs AD7606BSTZ)

Design Notes

Ensure clean power supplies for AVDD and DVDD. Use low-ESR ceramic capacitors (e.g., 0.1 uF and 10 uF) placed close to the power pins to decouple high-frequency noise. A ferrite bead in series with the supply can further isolate the ADC from digital switching noise.

For optimal performance, route the differential analog inputs as a controlled-impedance pair with a solid ground plane beneath. Keep the reference and input traces short and shielded from digital signals. Use a ground plane to minimize noise coupling. The CSPBGA package requires careful thermal management; ensure adequate vias for heat dissipation.

Avoid driving the analog inputs with high-impedance sources, as this can cause settling errors. Use a low-impedance driver or an op-amp buffer. Also, ensure the reference voltage is stable and well-filtered. Incorrect power sequencing can damage the device; follow the recommended power-up sequence in the datasheet.